The Dewey Decimal Classification System is the system which you most likely are familiar with, as it is the classification scheme most widely used by schools and public libraries.

Otterbein's library uses the Dewey Decimal System to classify works in the Juvenile and Curriculum section (located on the lower level in Sarah's Corner). See the table below for the various subject areas covered by the System.

EXAMPLE 1: JF B3456t
JF indicates juvenile fiction and then uses a letter and numbers to allow arrangement by author's last name.
JF	B	3456	t
Juvenile Fiction	Author's last name starts with B		Title starts with T
EXAMPLE 2: J 973.1 P23d
J or the word Juvenile indicate juvenile non-fiction and then uses the Dewey Decimal number which relates to the subject.
J	973.1	P	23	d
Juvenile non-fiction	US History (see table of subjects, listed above)	Author's last name starts with P		Title starts with D
EXAMPLE 3: Text 372.7 P745t
Curriculum materials may have the words Text or Text Kit written above their call numbers (in OPAL they are indicated with the location Curriculum). The call number, written on the books, includes the Dewey numbers for educational materials (372.7 or 372.8, etc.)
Text	372.7	P	745	t
Textbook	Educational material (see table of subjects, listed above)	publishing company begins with P		Author's last name begins with T (sometimes it is the title that begins with T)

If confusion still inhabits your mind, here are some helpful examples.